1. Department of Mechanical Engineering, California State Polytechnic University Pomona, 3801 W Temple Avenue, Pomona, CA 91768, USA
2. Department of Electrical and Computer Engineering, California State Polytechnic University Pomona, 3801 W Temple Avenue, Pomona, CA 91768, USA
3. Department of Chemical and Biomolecular Engineering, University of California Los Angeles, 405 Hilgard Ave, Los Angeles, CA 90095, USA
4. Nanoscience Instruments & Nanoscience Analytical, Inc., 10008 S. 51st Street Suite 110, Phoenix, AZ 85044, USA